from flask import current_app, jsonify
from flask import g
from flask import render_template, redirect
from flask import request
from flask import session
from flask import url_for

from info import constants, db
from info.models import User, News, Category
from info.utlis.response_code import RET
from . import admin_bp
from info.utlis.common import login_user_data
from info.utlis.image_store import qiniu_image_store
from datetime import datetime
from datetime import timedelta
import time

# 增加 添加/修改 分类的视图函数
@admin_bp.route('/add_category', methods=["POST", "GET"])
def add_category():
    """修改或这添加分类"""

    category_id = request.json.get("id")
    category_name = request.json.get("name")

    # 2. 校验参数
    if not category_name:
        return jsonify(errno=RET.PARAMERR, errmsg="参数不足")

    # 3. 逻辑处理
    # 分类编辑操作
    if category_id:
        category = None
        try:
            category = Category.query.get(category_id)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="查询分类异常")
        if not category:
            return jsonify(errno=RET.NODATA, errmsg="分类不存在")
        # 修改分类名称
        category.name = category_name
    else:
        # 添加分类
        category = Category()
        category.name = category_name
        db.session.add(category)
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存分类对象异常")

    return jsonify(errno=RET.OK, errmsg="OK")



@admin_bp.route('/category_type')
def category_type():
    """分类列表展示"""
    try:
        categories = Category.query.all()
    except Exception as e:
        current_app.logger.error(e)

    # 移除最新分类
    categories.pop(0)
    categories_dicts = []
    for category in categories if categories else []:
        # 获取字典
        cate_dict = category.to_dict()
        # 拼接内容
        categories_dicts.append(cate_dict)


    # 返回内容
    return render_template('admin/news_type.html', data={"categories": categories_dicts})



@admin_bp.route('/news_edit_detail', methods=["GET", "POST"])
def news_edit_detail():
    """新闻编辑修改接口"""
    if request.method == "GET":

        # 获取参数
        news_id = request.args.get("news_id")

        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此条新闻"})

        # 查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此条新闻"})

        # 查询分类的数据
        categories = Category.query.all()
        categories_list = []
        for category in categories if categories else []:
            # 分类对象转换成字典
            c_dict = Category.to_dict()
            # 　添加is_selected = False 不选择
            c_dict["is_selected"] = False
            if category.id == news.category_id:
                c_dict["is_selected"] = True
            categories_list.append(c_dict)

        # 移除 最新分类
        categories_list.pop(0)
        data = {"news": news.to_dict(), "categories": categories_list}
        return render_template('admin/news_edit_detail.html', data=data)

    # POST请求修改新闻
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 1.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    news = None  # type:News
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 2. 将标题图片上传到七牛
        try:
            key = qiniu_image_store(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key
    # 3. 设置相关数据 修改新闻对象
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    # 4. 保存到数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    # 5. 返回结果
    return jsonify(errno=RET.OK, errmsg="编辑成功")


@admin_bp.route('/news_edit')
def news_edit():
    """返回新闻列表"""

    page = request.args.get("p", 1)
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = []
        # 如果有关键词
        if keywords:
            # 添加关键词的检索选项
            filters.append(News.title.contains(keywords))

        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,
                                                                                          constants.ADMIN_NEWS_PAGE_MAX_COUNT,
                                                                                          False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_basic_dict())

    context = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_edit.html', data=context)


@admin_bp.route('/news_review_detail', methods=["GET", "POST"])
def news_review_detail():
    """新闻审核"""
    if request.method == "GET":

        # 获取新闻id
        news_id = request.args.get("news_id")
        if not news_id:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        # 通过id查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

        # 返回数据
        data = {"news": news.to_dict()}
        return render_template('admin/news_review_detail.html', data=data)

    # 执行审核操作 POS请求的时候需要带上news_id

    # 1.获取参数
    news_id = request.json.get("news_id")
    action = request.json.get("action")

    # 2.判断参数
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    if action not in ("accept", "reject"):
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")

    news = None
    try:
        # 3.查询新闻
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到数据")

    # 4.根据不同的状态设置不同的值
    if action == "accept":
        news.status = 0
    else:
        # 拒绝通过，需要获取原因
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
        news.reason = reason
        news.status = -1

    # 保存数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="数据保存失败")
    return jsonify(errno=RET.OK, errmsg="操作成功")


# 第一次请求/admin/news_review
# 后面分页请求/admin/news_review?p=
@admin_bp.route('/news_review')
@login_user_data
def news_review():
    """返回待审核的新闻列表"""
    # 获取参数
    page = request.args.get("p", 1)
    user = g.user
    keywords = request.args.get("keywords", "")
    try:
        page = int(page)
    except Exception as e:
        current_app.lgger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1

    try:
        filters = [News.status != 0]
        # 关键字有值　表示需要进行数据搜索
        if keywords:
            filters.append(News.title.contains(keywords))
        paginate = News.query.filter(News.status != 0) \
            .order_by(News.create_time.desc()) \
            .paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)

        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 模型列表转字典列表
    news_dict_list = []
    for news in news_list if news_list else []:
        news_dict_list.append(news.to_review_dict())

    context = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_review.html', data=context)


# 用户列表
@admin_bp.route('/user_list')
@login_user_data
def user_list():
    """用户列表展示"""
    # 获取页数
    p = request.args.get("p", 1)
    try:
        p = int(p)
    except Exception as e:
        current_app.logger.error(e)
        p = 1

    user = g.user
    user_list = []
    current_page = 1
    total_page = 1
    try:
        paginate = User.query.filter(User.is_admin == False).paginate(p, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        # 获取当前页数据
        user_list = paginate.items
        # 获取当前页
        current_page = paginate.page
        # 获取总页数
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    user_dict_list = []

    for user in user_list if user_list else []:
        user_dict_list.append(user.to_admin_dict())
    data = {"users": user_dict_list, "total_page": total_page, "current_page": current_page}
    return render_template('admin/user_list.html', data=data)


@admin_bp.route('/user_count')
@login_user_data
def user_count():
    """展示用户统计页面"""
    # 查询总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询月新增数
    mon_count = 0
    try:
        now = time.localtime()
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询日新增数
    day_count = 0
    try:
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询图表信息
    # 获取到当天00:00:00时间

    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')
    # 定义空数组，保存数据
    active_date = []
    active_count = []

    # 依次添加数据，再反转
    for i in range(0, 31):
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()

    data = {"total_count": total_count, "mon_count": mon_count, "day_count": day_count, "active_date": active_date,
            "active_count": active_count}

    return render_template('admin/user_count.html', data=data)


@admin_bp.route('/index')
@login_user_data
def admin_index():
    user = g.user
    data = {
        "user_info": user.to_dict() if user else None
    }
    return render_template("admin/index.html", data=data)


# /admin/login
@admin_bp.route('/login', methods=["GET", "POST"])
def admin_login():
    """后台登陆模块"""
    if request.method == "GET":

        # 从session中获取管理员用户数据
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", None)
        # 用户登陆成功而且是管理员
        if user_id and is_admin:
            # 如果管理员已经登陆，当他访问login页面的时候，直接到后台首页
            return redirect(url_for("admin.admin_index"))

        return render_template('admin/login.html')

    # psot 请求获取用户提交数据进行登陆校验
    # 1. 获取参数
    username = request.form.get("username")
    password = request.form.get("password")
    # 2. 校验参数
    if not all([username, password]):
        return render_template("admin/login.html", errmsg="参数不足")
    # 3.逻辑处理
    try:
        user = User.query.filter(User.mobile == username, User.is_admin == True).first()
    except Exception as e:
        return render_template("admin/login.html", errmsg="查询管理员失败")
    # 校验密码
    if not user.check_passowrd(password):
        return render_template("admin/login.html", errmsg="密码错误")

    # 使用session记录管理员登录信息
    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["mobile"] = user.mobile
    # 记录是否是管理员
    session["is_admin"] = user.is_admin

    # 　4 TODO 跳转到管理员首页
    # admin_index 通过蓝图注册之后，名字变成了admin.admin_index
    return redirect(url_for("admin.admin_index"))
